{{Rsnum
|rsid=4105144
|Chromosome=19
|Orientation=plus
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|position=40852719
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|Gene=CYP2A
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 54.7 | 35.9 | 9.4
| HCB | 0.0 | 0.0 | 0.0
| JPT | 0.0 | 0.0 | 0.0
| YRI | 0.0 | 0.0 | 0.0
| ASW | 0.0 | 0.0 | 0.0
| CHB | 0.0 | 0.0 | 0.0
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}{{PMID Auto GWAS
|PMID=20418888
|Trait=Smoking behavior
|Title=Sequence variants at CHRNB3-CHRNA6 and CYP2A6 affect smoking behavior
|RiskAllele=C
|Pval=2E-12
|OR=0.39
|ORtxt=[0.27-0.51] CPD increase
|OA=1
}}

{{omim
|id=188890
|rsnum=4105144
}}

{{PMID Auto
|PMID=21862624
|Title=Genetic polymorphisms in 15q25 and 19q13 loci, cotinine levels, and risk of lung cancer in EPIC.
}}

{{on chip | 23andMe v3}}